• Internal medicine · Feb 2021

    Sensory Nerve Conduction Study with Inching Test in Palmar Digital Neuropathy.

    • Tatsuya Ueno, Masayuki Baba, Akira Arai, Chieko Suzuki, and Masahiko Tomiyama.
    • Department of Neurology, Aomori Prefectural Central Hospital, Japan.
    • Intern. Med. 2021 Feb 1; 60 (3): 469-472.

    AbstractMild palmar digital neuropathy may be underestimated because selective nerve conduction studies (NCS) of the palmar digital nerve are challenging. We herein report two cases of palmar digital neuropathy. We performed sensory NCS in each finger using the standard approach. Both cases showed a decrease in the amplitude of sensory nerve action potential (SNAP) in the localized finger. Furthermore, the sensory nerve inching test identified the lesion site. When performing NCS in patients with finger sensory impairment, we recommend recording the SNAP in each finger using standard NCS at the wrist, as well as sensory nerve inching testing.

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